Dr Mark Porter reports on NHS Health Checks which are available to everyone between 40 and 74. Public Health England's Professor Kevin Fenton says this could save at least 650 lives, prevent 1600 heart attacks and 4000 cases of diabetes. Inside Health's resident sceptic Dr Margaret McCartney isn't convinced. We examine the truth behind rumours of a blood service sell off. Inside Health visits Addenbrooke's Hospital to answer a listener's query about Crohn's disease. Diabetes in pregnancy is a growing problem with potentially serious consequences for both the mother and baby. Mark meets a team which has developed an app to help women manage their diabetes.